Ctalk adds classes, methods, operator overloading,
inheritance, and complex object expressions to otherwise standard C programs. Programs can use only a few Ctalk objects and methods in an otherwise standard C program, but the language can be used to write entire programs also. Ctalk works on most if not all of the systems that support GCC, the GNU C compiler. The package includes the language, class and run-time libraries, example programs, tutorial, and language reference.

Gearmand is the job server component of Gearman.
Gearman provides a generic framework to farm out
work to other machines, dispatching function calls
to machines that are better suited to do work, to
do work in parallel, to balance the load of
processing, or to call functions between
languages.

GNU EDMA is an open and modular development environment similar to the Component Object Model or the System Object Model. GNU EDMA allows you to use most of the classic OO techniques (such as inheritance and virtual method overriding) dynamically.

Dateutils are a bunch of tools that revolve around fiddling with dates and times in the command line, with a strong focus on use cases that arise when dealing with large amounts of financial data. Their target market is shell scripts that need date calculations or calendar conversions, and as such they are highly pipe-able and modeled after their well-known cousins (e.g. dtest vs. test, or dgrep vs. grep).

libamqp is a C client for AMQP, a wire protocol for message queuing. It should be easy to use from Linux, Solaris, BSD, or Windows. It is intended to be capable of small, fast operation for needs from embedded messaging in sensors to needs of millions of messages a second.

libtld is a library used to extract the TLD from a URI and to check email validity. This allows you to extract the exact domain name, sub-domains, and all the TLD (top level, second level, third level, etc.). The problem with TLDs is that you cannot know where the domain starts. Some domains can use one top-level domain, others use two, etc. However, it may be useful to know where the domain is to have the exact list of sub-domains. For example, if you want to force www. at the start of the domain name if no other sub-domains are specified, then you need to know exactly how many TLD are defined in a URI. The libtld offers one main function: tld(), which gives you a way to extract the TLD from any URI. The result is the offset where the TLD starts. This gives you enough information to extract everything else you need. For emails, the library is capable of parsing a string that represents a list of email addresses to be verified. The verification includes a check of the domain name and its TLD.

libstream is a fast I/O stream library written in C. It supports common stringstream operations such as read(), write(), and peak(). Instead of using one large buffer, libstream splits its internal buffer into a linked list of fixed-size chunks, thus featuring a more efficient memory footprint. There are no external dependencies.

Libntoh aims to be a user-friendly library to provide an easy way to perform defragmentation and reassembly of network/transport protocols. It is intended to provide a flexible, thread-safe, and highly configurable environment for the user. It performs IP defragmentation and TCP reassembly.

LibHdate is a small library for the Hebrew calendar with dates, holidays, and reading sequence. It is written in C and includes bindings for Pascal, Perl, {ython, PHP, and Ruby. hcal and hdate are small example command line programs written in C. This release brings many new options, features, and bugfixes to the two example programs hcal and hdate. The changes to the underlying function library include a few minor bugfixes, deprecation of a series of string functions in favor of a single new one with better memory allocation, and hard-coding of core
elements of the Hebrew localization so that Hebrew can be displayed in all locales. Some selected highlights: config files for storing defaults; user-defined menus (defined in a config file); sunset awareness, based on coordinates given or system timezone and guesswork; optional easier entry of coordinates (N, S, E, W, dd:mm:ss); minhag customization for Shabbat times; and Hebrew information in Hebrew characters (for all locales). hcal can display in 3-month mode, in color, and with footnotes and Shabbat information. hdate can output data in CSV format, suitable for spreadsheets, awk, etc. hdate has many format enhancements.

Wslay is a WebSocket library written in C. It implements the protocol version 13 described in RFC 6455. This library offers 2 levels of API: an event-based API and a frame-based low-level API. For the event-based API, it is suitable for non-blocking reactor pattern style. You can set callbacks in various events. For the frame-based API, you can send WebSocket frame directly. Wslay only supports the data transfer part of the WebSocket protocol and does not perform the opening handshake in HTTP. It does not perform any I/O operations for its own. Instead, it offers callbacks for them. This makes Wslay independent of any I/O frameworks, SSL, sockets, etc. It is portable across various platforms, and the application authors can choose I/O frameworks freely.